1. A detailed explaination on the amp's gain selector--- I was sooo confused by my 14B's manual, 'bottom half ' of the volume knob? what's the bottom half... half of the max volume, or i draw a horizontal line across the knob so that's 1/4 the max volume..

2. Some simple facts regarding the connections between amp's drive power (watts), current and the speaker's power handling, actual SPL. --- I know the answer is juse one google search away, but it's be very cconvenient if covered in FAQ section.